7 Best 37 12 50 R20 All Terrain Tires (Researched and Compared)

We researched and compared the top 37×12.50R20 all terrain tires on the market. Our evaluation is based on manufacturer specifications, industry standards, and aggregated owner feedback. We looked at on-road comfort, off-road traction, tread life, and noise levels to help you decide.

1. BFGoodrich All-Terrain T/A KO2: Best Overall

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The BFGoodrich All-Terrain T/A KO2 is a benchmark in the 37×12.50R20 category. In our evaluation, it consistently ranks high for durability and off-road capability. The CoreGuard sidewall armor and 3-ply construction make it one of the toughest tires available, resisting cuts and punctures better than most. Owners praise its long tread life and confident grip on loose surfaces.

However, the KO2 is not the quietest tire on pavement, and its heavy weight can slightly reduce fuel efficiency. It also has a stiffer ride compared to some lighter all-terrains. If you prioritize ultimate off-road toughness and longevity over on-road comfort, this is a top choice. But if most of your driving is on highways, consider a more road-focused option.

• CoreGuard technology provides excellent sidewall toughness for rocky terrain.
• Balanced on-road manners with minimal noise for an aggressive A/T tire.
• Proven tread life with many owners reporting over 50,000 miles.

Pros: Exceptional durability and puncture resistance.; Strong off-road traction in mud and rocks.
Cons: Heavier than some competitors, which may affect fuel economy.

2. Nitto Ridge Grappler: Best Hybrid

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The Nitto Ridge Grappler is a popular hybrid tire that combines the best of both worlds: aggressive off-road performance and respectable on-road manners. In our research, owners frequently highlight its low noise levels for a tire with such an aggressive tread. The dual sidewall design allows you to customize the appearance, and the variable pitch tread helps minimize hum on the highway.

That said, the Ridge Grappler’s tread life is not as long as the KO2 or some other A/Ts, and its mud performance is good but not exceptional in deep conditions. It also tends to be a bit pricier per mile. If you want an aggressive look and decent trail capability without sacrificing daily driving comfort, this is a strong contender. However, serious off-roaders may want a more dedicated mud-terrain.

• Hybrid tread pattern blends mud-terrain aggression with all-terrain comfort.
• Variable pitch tread blocks reduce road noise for a quieter ride.
• Excellent traction in loose dirt and moderate mud.

Pros: Great balance between off-road capability and on-road comfort.; Unique aggressive look with dual sidewall options.
Cons: Tread life is slightly shorter than some dedicated A/T tires.

3. Toyo Open Country A/T III: Best On-Road

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The Toyo Open Country A/T III is designed for drivers who spend most of their time on pavement but need occasional off-road capability. In our evaluation, it stands out for its quiet, comfortable ride and confident wet braking. The 3D sipe technology provides excellent grip on wet roads, and the stone ejectors help prevent damage from debris.

However, its off-road performance is more suited to dirt roads and light trails rather than serious rock crawling or deep mud. The sidewall is less aggressive than the KO2 or Ridge Grappler, so it may not inspire confidence in extreme terrain. If you are a daily driver who occasionally goes off-road, this tire is a great choice. But for heavy off-road use, we recommend a more aggressive tire.

• Excellent dry and wet traction with 3D sipes for biting edges.
• Quiet and comfortable ride, one of the best on-road in its class.
• Stone ejectors prevent rock drilling and protect the casing.

Pros: Superb on-road handling and low noise.; Long tread life and even wear.
Cons: Off-road traction is adequate but not class-leading in deep mud.

4. Goodyear Wrangler Duratrac: Best for Snow

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The Goodyear Wrangler Duratrac is a favorite among those who face harsh winters and need a tire that can handle snow and ice. It carries the 3PMSF symbol, indicating severe snow service. In our research, owners report confident traction in deep snow and slush. The self-cleaning tread also works well in mud.

On the downside, the Duratrac is not the quietest tire on dry pavement, and its tread life is slightly shorter than some competitors. It also tends to be a bit heavier, which can affect fuel economy. If you live in a snowy region and want a tire that can handle winter without switching to dedicated snow tires, this is a solid pick. But for primarily warm-weather driving, there are better options.

• Severe snow rated with mountain snowflake symbol for winter traction.
• Self-cleaning tread design sheds mud and snow effectively.
• Reinforced sidewalls for durability in rocky conditions.

Pros: Excellent snow and ice traction.; Good off-road performance in mud and loose terrain.
Cons: Noise levels are higher than some all-terrains on highway.

5. Falken Wildpeak A/T3W: Best Value

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The Falken Wildpeak A/T3W is a budget-friendly option that still delivers respectable all-terrain capability. In our evaluation, it offers a comfortable ride and good wet traction, with a long treadwear warranty. The heat diffuser technology helps prevent heat-related damage during highway use.

However, the sidewall is not as tough as the KO2 or Duratrac, and some owners report punctures in rocky terrain. It also tends to wear faster under heavy loads or aggressive driving. If you are on a budget and do mostly light off-roading, this tire provides good value. But for serious off-road adventures, we recommend spending more on a stronger tire.

• Offers a good balance of on-road comfort and off-road traction at a competitive price.
• Heat diffuser technology reduces heat buildup for longer life.
• Deep tread depth provides good grip in mud and snow.

Pros: Strong value for the price.; Decent all-around performance.
Cons: Sidewall is less robust than premium competitors, more prone to cuts.

6. Cooper Discoverer STT Pro: Best Mud Terrain

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The Cooper Discoverer STT Pro is a true mud-terrain tire for those who need maximum off-road traction. In our research, it excels in deep mud, rocks, and loose dirt, with aggressive tread that cleans out well. The Armor-Tek3 casing provides good protection against punctures.

However, this tire is not designed for on-road comfort. It is noticeably loud and has a stiff ride, making it less suitable for daily driving. Tread life is also shorter than all-terrain tires. If you primarily off-road and can tolerate the noise, this is a capable choice. But for mixed use, a hybrid or all-terrain is better.

• Aggressive mud-terrain tread with deep lugs for maximum off-road grip.
• Armor-Tek3 construction enhances puncture resistance.
• Stone bumpers prevent debris from lodging in the tread.

Pros: Excellent traction in deep mud and loose soil.; Very durable casing resists punctures.
Cons: Very loud on pavement, especially at highway speeds.

7. Mickey Thompson Baja Boss A/T: Premium Hybrid

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The Mickey Thompson Baja Boss A/T is a premium hybrid tire that aims to combine off-road prowess with on-road civility. In our evaluation, it performs well in mud and rocks, and the PowerPly XD sidewall adds durability. It is quieter than a full mud-terrain, but still noisier than standard all-terrains.

However, its price is high, and tread life is average at best. Some owners report uneven wear if not rotated frequently. If you want a tough, aggressive-looking tire for moderate off-road use and are willing to pay a premium, this is an option. But for most drivers, the Nitto Ridge Grappler offers similar performance at a better value.

• Hybrid design with mud-terrain aggressiveness and all-terrain comfort.
• PowerPly XD sidewall offers extra strength for off-road abuse.
• Variable pitch tread reduces noise compared to full mud-terrains.

Pros: Strong off-road performance with good sidewall protection.; Unique aggressive look.
Cons: Higher price point, and tread life is not as long as some A/Ts.

Frequently Asked Questions

What is the best 37×12.50R20 all terrain tire for daily driving?

For daily driving with minimal off-road use, the Toyo Open Country A/T III is an excellent choice. It offers a quiet, comfortable ride and long tread life. The BFGoodrich All-Terrain T/A KO2 is also a good option if you need occasional off-road capability without sacrificing too much on-road comfort.

How long do 37×12.50R20 all terrain tires typically last?

Tread life varies by tire and driving habits. Most all-terrain tires in this size come with a 45,000 to 55,000 mile warranty. With proper rotation and maintenance, many owners report getting 40,000 to 50,000 miles. Aggressive off-road use and heavy loads can reduce tread life.

Are 37×12.50R20 all terrain tires noisy on the highway?

Noise levels depend on the tread pattern. Tires like the Toyo Open Country A/T III and BFGoodrich KO2 are relatively quiet. More aggressive tires like the Cooper STT Pro and Mickey Thompson Baja Boss A/T are louder. Hybrid tires like the Nitto Ridge Grappler offer a good balance.

Can I use 37×12.50R20 all terrain tires in snow?

Yes, but not all are equal. The Goodyear Wrangler Duratrac is severe snow rated (3PMSF) and performs well in snow. Many all-terrains with the 3PMSF symbol are suitable for light to moderate snow. Check the tire’s rating before relying on it in winter conditions.

Do I need to modify my vehicle to fit 37×12.50R20 tires?

Typically, yes. 37-inch tires often require a lift kit, leveling kit, or trimming to avoid rubbing on suspension and body parts. Always check your vehicle’s clearance and consult a professional before installing oversized tires.

Our Verdict

After researching and comparing the top 37×12.50R20 all terrain tires, our top pick is the BFGoodrich All-Terrain T/A KO2 for its exceptional durability, off-road traction, and long tread life. For a more balanced on-road experience, the Nitto Ridge Grappler is a strong runner-up, offering a quiet ride with aggressive looks. Choose based on your primary driving needs.